Solved Direct accessing the kunena component and permissions.

When I installed the component all the steps were completed correctly (and marked with an OK, in green).

I just clicked on forum and then accessed /?option=com_kunena and I get this error

Warning: Using direct link to Kunena component. Redirected to menu item in /forum (ItemID=199).
Warning: Using direct link to Kunena component. Redirected to menu item in /forum (ItemID=199).
Please check your Joomla menus: Infinite redirect loop detected in /forum
Kunena Menu is missing: You cannot have menu in direct links pointing to Kunena component. You need to create menu item matching to this page.

I made much attemps but I got this error just one time. I suppose after the first time it's harder to get the error again. Anyway, this is my latest config (I installed it again)

Database collation check: The collation of your table fields are correct

Legacy mode: Disabled | Joomla! SEF: Enabled | Joomla! SEF rewrite: Enabled | FTP layer: Enabled |

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 30 seconds | Max execution memory: 128M | Max file upload: 16M

Kunena menu details:

Joomla default template details : android-area | author: Biowep | version: 1.0 | creationdate: 10 February 2012

Kunena default template details : Blue Eagle (default) | author: Kunena Team | version: 1.7.2 | creationdate: 2012-01-31

Kunena version detailled: Installed version: 1.7.2 | Build: 5215 | Version name: Omega | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

Third-party components: None

Third-party SEF components: None

Plugins: System - Mootools Upgrade: Disabled | System - Mootools12: Disabled

Modules: None

You still have problems with your Joomla menu. Did you trash all menu items (you have more than 10) that affect Kunena? Did you empty the menu trash? If you do those two things, then you can use the Create Menu option in the backend Kunena control panel and publish the newly created menu.

However, if you have added your own special URL redirect rule in your .htaccess file then none of my suggestions will work. If you like we might be able to look at your website backend to see what's going on.

Please find menu item which has ID = 199 and tell us where it's located and what does it contain.

It's the main forum menu item located the Kunena Menu

Good. Now go to the Entry page and check that the single parameter with menu item list (on the right side) is pointing to the menu item you want to be the default page (most likely Index or Recent Topics).

It's pointing to Recent Topics